Maybe the attack on Jon will happen. http://www.vanityfair.com/hollywood/2015/05/jon-olly-game-of-thrones-kill-the-boy The article says he is signed on through season 7 though so if it does happen he is revived somehow. Also, some season 6 spoilers via casting details. http://www.vanityfair.com/hollywood/2015/05/game-of-thrones-season-6-casting-greyjoys-tarlys